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Miguel Ángel
34f5fc05f3
* feat(studio): add pasteboard background to preview viewport Adds bg-neutral-800 to the preview viewport so the area outside the canvas is visually distinct from the composition content — consistent with professional video editors (Premiere, DaVinci, Figma). * feat(studio): pasteboard background and canvas outline around preview - NLEPreview: viewport gets bg-neutral-700 (#404040) as the pasteboard color surrounding the canvas — distinct from the app chrome (#0a0a0a) - Player wrapper: drop bg-black so the pasteboard shows around the canvas (loading overlays still cover the area with bg-black during load) - Player: set host background to transparent via inline style (overrides :host { background: #000 } in shadow DOM), and inject a style rule into the open shadow root so .hfp-container has overflow:visible and the canvas iframe gets a thin white ring + soft drop-shadow — making the canvas boundary legible against the pasteboard